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ACOUSTIC MEASUREMENTS REPORT November, 2020
ACOUSTIC MEASUREMENTS REPORT
November, 2020
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Client : BUSYPOD Brand
Product : BUSYPOD XLarge Meeting Pod
Scope : Acoustic Measurements Report
Report No : MEA-BSP-AMR-201106004EN
Date of Issue : 06.11.2020
Prepared By : Arda YAVUZ MSc.Arch / Acoustic Consultant
Onur ÜNLÜ MSc.Arch
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TABLE OF CONTENTS
1. GENERAL INFORMATION ................................................................................. 4
1.1. Summary ...................................................................................................... 4
1.2. Measurement Equipment ............................................................................. 4
1.3. Room Conditions .......................................................................................... 4
2. ACOUSTIC MEASUREMENS ............................................................................ 5
2.1. Airborne Sound Transmission Loss Measurements ..................................... 5
2.2. Reverberation Time Measurements ............................................................. 7
2.3. Background Noise Measurements ............................................................... 8
3. TECHNICAL EVALUATION ............................................................................... 9
APPENDIX A: CALIBRATION CERTIFICATE OF SOUND LEVEL METER .......... 10
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1. GENERAL INFORMATION
1.1. Summary
This report is prepared to present the results of acoustic measurements of the
BUSYPOD XLARGE cabinet. The measurements were carried out on October 27,
2020.
1.2. Measurement Equipment
RION Sound Level Meter Model NL-52, IEC 61672-1 :2013 Class 1, ANSI S1.4-
2014 Class 1, Serial No: 00654066
CA111 Sound Calibrator, Comply with IEC 60942:2003 Class 1, ANSI S1.40-
1984(R1997), GB/T 15173-1994 Class 1, Serial No: 490102
NH-25 type preamplifier, Serial No: 54111
UC-59 type microphone, Serial No: 08324
NTEK OMNI 5″ dodecahedron sound source + power amplifier
No windshield was used during the measurements.
RION NL-52 equipment was calibrated before and after the measurements and no
variation was observed.
Sound level meter’s calibration certificate is presented in APENDIX A.
1.3. Room Conditions
Unoccupied, ventilation fans switched off. The doors were closed. Ventilation fans
switched on only in background noise measurements.
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2. ACOUSTIC MEASUREMENS
In BUSYPOD XLARGE, 8 sound transmission loss (STL) measurements, 2
reverberation time (RT) measurement and 1 background noise measurements were
performed when 8 fans were operating.
2.1. Airborne Sound Transmission Loss Measurements
Airborne sound transmission loss (STL) measurements were carried out in accordance
with ISO 16283-1. A single figure rating of airborne sound insulation performance (R’w)
was calculated from the measurements.
In each test, sound pressure level measurements were made in randomly chosen
positions in both the source and the receiver rooms for each speaker position. The
sound level meter was always positioned at least 0.5 m away from any room boundary
or diffuser and at least 1 m from the source. Sound pressure levels were measured in
one third octave bands from 100Hz - 3150Hz. Each measurement took approximately
30 seconds. To be able to minimize sound transmission from flanking paths, doors
were always kept closed.
Regarding BUSYPOD XLARGE, airborne sound transmission loss measurement
results are given in Table 1. The detailed measurement reports are also included in
the following pages.
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2.2. Reverberation Time Measurements
Regarding BUSYPOD XLARGE, reverberation time (RT) measurement results are
below. Average reverberation time was measured as 0,37 seconds.
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2.3. Background Noise Measurements
Regarding BUSYPOD XLARGE, background noise (BG) measurements were made
while 12 fans were operating. Obtained background noise value is 42 dB respectively.
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3. TECHNICAL EVALUATION
Sound frequency values to be heard by the human ear:
a) Male speech sound frequency value: 100-8500 Hz,
b) Female speech sound frequency value: 150-10000 Hz.
Men can get more bass, women can get higher-pitched sounds. The area where the
human ear is most sensitive. (Also called Trigger Zone) are frequency values between
1000 and 5000 Hz. Human beings can perceive the sounds formed in this frequency
region without seeing the person speaking in front of him. In this frequency range,
BUSYPOD XLarge Meeting Pod provide sound insulation up to 35,0 dB.
--------------------------------------------END OF REPORT---------------------------------------------
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Tel: +902165043085 Fax: +902162505556 Gsm: +905332313747
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APPENDIX A: CALIBRATION CERTIFICATE OF SOUND LEVEL METER
